kerthump

Etymology
From.

Interjection

 * 1) The sound of a loud or repeated thump.

Noun

 * 1) The sound of a loud or repeated thump.
 * 2) * 1973, Herb Williams, Outdoor Adventures: A Goushā Weekend Guide, Goushā Publications, page 17
 * Then, all of a sudden, you hear that hollow sounding "ker-thump, ker-thump, ker-thump" of a deer bounding through the woods ahead of you.